Telegraphic fire-alarm apparatus



(ModeL) A. C. 8v A. H. PALMER.

TELEGRAPHIG FIRE ALARM APPARATUS. No. 262,242. Patented Aug. 8, 1882.

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at the receiving-station for giving the alarm to the accompanying drawings.

UNITED STATES PATENT OEEieE.

AUGUSTUS O. PALMER AND AUGUSTUS H. PALME 1, OF UTIOA, NElV YORK.

TELEGRAPHIC FIRE- SPECIFIGATION forming part of Letters Application filed October 7, 1881.

To all whom it may concern:

Be it known that we, AUGUSTUS O. PALMER and AUGUSTUS H. PALMER, citizens of the United States, residing at Utica, in the county of Oneida and State of New York, have invented anew and useful Improvement in Telegraphic Fire-Alarm Apparatus, of which the following is a. specification, reference being had Our invention relates to that part of telegraphic fire-alarm apparatus which is employed transmitted from the signal-station; and it consists primarily in the construction of that part of the mechanism which forms and controls the stop for the moving parts after each stroke of the alarm.

Our invention also consists in the special means for driving said moving parts, and in such further details as are hereinafter described, and specifically pointed out in the claims.

In the drawings, Figure l. is a front and Fig. 2 a side elevation of so much of the apparatus used at the receiving-station and embodying our invention as serves for illustration of the same. Fig. 3 shows the vertical rod and stoplever.

The frame is formed of the rear plate, A, front plate, B, (a part of which is broken away in Fig. 1,) and rods or posts a for holding the plates in position.

On a shaft, (J, is a gear, I), which is provided with a ratchet-wheel, 0, and pawl cl, so that the shaft may turn in one direction in winding up without moving the gear.

Fixed on the shaft O, at the rcarol' the plate A, is a sprocket-wheel, D.

We employ as the actuating means a weight, E, attached to an endless chain, F, which extends over the sprocket-wheel. The sprockets e on this wheel hold the chain from slipping thereon, though the chain simply passes over or bears on the upper half of the wheel. This chain forms a simple and ready means for winding up and actuating the motive parts of the mechanism.

Into the gear I) meshes a pinion, f, which is fixed on a shaft, g. On this shaft is a wheel, G, which has teeth or pins h on its side to engage with a worm, i, on a shaft,j. On the shaft 9 is also a wheel, k, having teeth or pro- ALARM APPARATUS.

Patent No. 262,242, dated August 8, 1882.

(ModeL) jections Z, that swing the lever m, pivoted at a, and having at the other end a hammer, 0.

The magnet H is located at the top of the device, as shown.

The armature I is fixed to an arm, 2), which is pivoted at q.

To the arm 2 is connected arod, J, by means of a link, K, pivoted as shown, and an adjusting screw, 1, and nuts 8. This rod J is placed vertically and guided in stands t and a, so as to slide therein. There is a screw, '0, in the stand a, bearing against the lower end of the rod J, for regulating the distance which this rod and the armature may drop.

A lever, L, is pivoted to astand at 10. One end, 00, of this lever enters loosely an opening in the rod J and the other end, y, is shaped and located as shown.

An arm,M,is fixed on the shaftj in such position that the outer end may strike and rest on the end 3 of the lever L when the latter is brought within the range of the arm.

When the circuit is complete the armature is drawn to the magnet and the rod J is lifted, and H118 action, by the swinging of the lever L, brings the end 3 from under the end of the arm M. Thereupon the weight E sets the gear Z) in motion, which causes the pinion f to make a partial revolution, and also the disk or wheel k and thewheel G. The partial revolution of the wheel k is sufiicient that a tooth or projection, I, may cause the lever m to swing and the hammer 0 to make one stroke, the lever and hammer being returned to a position away from the hell by a spring, N. The partial revolution of the wheel G is sufl'icieut to cause, by means of one of the teeth or pins h and the worm i, a revolution of the shaft j. In the meantime, the circuit being broken, the armature androd J fall by gravity and bring the lever L in such position that the arm M shall strike the end 3 and the striking parts he stopped. The circuit being again completed, another blow is struck as before, and so on for the required number given at the signal station.

By arranging the rod J so that it and the armature are removed from the magnet by gravity a simple, reliable, and effective device for this part of the mechanism is produced. By using a lever, L, set as specified, the removal of its endthat is, of a stop from under the arm M-is accompanied n'ithlittlc friction, and 3. In combination with avertical sliding rod requires but little force by the magnet, and connected with the armature and opcrating'as hence the operation is rendered more certain. specified, lever L and revolving arm M, sub- \Ve claim as our invention stantially as and for the purpose set forth. 5 1. The combination of the vertical sliding 7 rod or bar J, armature I, and pivoted lever and stop L, substantially as specified. i

2. The combination of the vertical sliding \Vitnesses: rod or bar J, armature l, and link K, snbstan- CHARLES A. RoLFE, 1o tially as specified. SAML. A. BEARDSLEY. 

